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SRPS EN ISO 1061:2012

Plastics - Unplasticized cellulose acetate - Determination of free acidity (ISO 1061:1990)

Jun 21, 2012

General information

60.60     Jun 21, 2012

ISS

G061

European Norm

83.080.01     83.080.20  

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Scope

The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. This method is not suitable for cellulose acetate containing any additives which may affect the test. The principle consists in treating a test portion of cellulose acetate with water and titrating the resultant solution with sodium hydroxide solution. The free acidity is calculated as the percentage, by mass, of free acetic acid in the cellulose acetate. This second edition cancels and replaces the first edition ISO 1061:1975, of which it constitutes a minor technical revision.

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SRPS EN ISO 1061:2012
60.60 Standard published
Jun 21, 2012

Related project

Adopted from EN ISO 1061:1999

Adopted from ISO 1061:1990 IDENTICAL